Index Catalog // ScholarsArchive@OSU

Estuarine sediment controls on trace metal distributions

Creator:: Davies-Colley, Robert J.
Abstract:: Sediments are the major compartment in aquatic environments for many materials of toxic or nutrient concern. The lack of knowledge of the phase associations of toxic metals in sediments is the largest deficiency in our understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary partitioning...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF Robert J. Davies-Colley for the degree of Doctor of Philosophy in

Factors affecting the adsorption of heavy metals by activated sludge bacteria

Creator:: Conlin, Mary F.
Resource Type:: Masters Thesis
Full Text:: Metals by Activated Sludge Bacteria Abstract approved: Redacted for privacyPeter O. Nelson, M.S., Ph.D

Adsorption of hexavalent and trivalent chromium to a clayey silt soil : batch kinetic and equilibrium studies

Creator:: Bean, Gregory R.
Abstract:: Chromium, an element of widespread use, is toxic in some forms. Improper disposal of waste chromium products has resulted in contamination of many sites throughout the United States, including the United Chrome Products Superfund site in Corvallis, Oregon. A better understanding of chromium chemistry is needed to facilitate the remediation...
Resource Type:: Masters Thesis
Full Text:: 0 02- 00- O. 1.0 X I04M b. 1.0x10 -3M c. 60 x 10-3M I. HCr04- 2. CrO4a 3. H2Cr04 4. Cr2072 10

Application of quality function deployment in the conceptual design of a construction project

Creator:: Hinkle, Verda O.
Abstract:: Quality Function Deployment (QFD) is a product development process that assures the needs and desires of the customer are heard and heeded during the design, development and production of a product. Though it has been used successfully in other industries, only a few companies in the U. S. Engineering and...
Resource Type:: Masters Thesis
Full Text:: 1977. "Between January 1977 and April 1984, Toyota Autobody introduced four new van-type vehicles

Alternate Methods for the Extraction and Measurement of Pore Solution in Fresh Concrete

Creator:: Biever, Joseph
Abstract:: Knowledge of the pore solution composition and pore solution resistivity can be helpful for determining the durability of concrete structures. Most notably, pore solution resistivity can be used in the calculation of the formation factor of concrete, which is a ratio of the electrical resistivities of concrete and its pore...
Resource Type:: Honors College Thesis
Full Text:: Considerations," Concr Sci Eng., 2010, 3. 2. Weiss W, Ley M, Isgor O, Van Dam T., "Toward Performance

Measuring and Correcting the Electrical Resistivity of Concrete Pore Solution in Fresh Mixtures

Creator:: Biever, Joseph H.
Abstract:: A vital aspect of concrete construction is quality assurance and control (QA/QC). Engineered structures must meet pre-determined and agreed-upon strength and durability requirements. Concrete falls into a specific category of infrastructure material because in most cases, these strength and durability requirements cannot be found until the material has at least...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________ W. Jason Weiss O. Burkan Isgor A vital aspect of concrete construction is quality

Biodegradability and oxygen uptake studies on resuspended estuarine bottom sediments

Creator:: Touhey, Robert James
Abstract:: A study was conducted to determine the oxygen uptake rate of resuspended estuarine bottom sediments and the biodegradability of the organic matter released during resuspension. Oxygen uptake was measured on a Gilson Differential Respirometer and the percent biodegradability was calculated by determining the soluble organic carbon on a Beckman Carbonaceous...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF ROBERT JAMES TOUHEY for the MASTER

Nonlinear diffraction theory by an eigenfunction expansion of the Green's function

Creator:: Chen, Min-Chu
Abstract:: A second-order nonlinear diffraction theory is developed for a large diameter circular cylinder under the action of surface gravity waves of finite amplitude in water of-finite depth. Boundary value problems are derived by using a perturbation expansion and the solutions for the diffracted waves are given in terms of Fredholm...
Resource Type:: Dissertation
Full Text:: EIGENFUNCTION EXPANSION OF THE GREEN'S FUNCTION Abstract approved: Redacted for Privacy V Dr. Robert T

Transport and adsorption of proteinanceous particles during flow through porous media

Creator:: Yamamoto, Tokuo
Abstract:: This is a fundamental study of the mechanism of protein particle removal during flow through sandy soil. Mathematical models for diffusion-adsorption and diffusion-convection-adsorption processes were developed and compared with experimental data. An attempt was made to calculate the distance over which the adsorption forces act. The differential equation for the...
Resource Type:: Dissertation
Full Text:: OF PROTEINACEOUS PARTICLES DURING FLOW THROUGH POROUS MEDIA Abstract approved: for Privacy Robert-W

The static and dynamic analysis of discretely represented moorings and cables by numerical means

Creator:: Dominguez, Richard Frank
Abstract:: Computer oriented techniques and procedures are presented for the analysis of single and multiple cable systems. Application is made to a two-point mooring system influenced by surface and subsurface hydrodynamic loading. The effects of the various parameters are presented and the numerical method is compared to exact solutions obtained from...
Resource Type:: Dissertation
Full Text:: MEANS Abstract approved: Redacted for privacy Robert W. Fliskier Computer oriented techniques and

Evaluation of alternate surfacing systems for temporary and intermittent use roads

Creator:: Takallou, Mojtaba B.
Abstract:: The purpose of this study was to provide the USDA-Forest Service, Bureau of Land Management (BLM), and other agencies or industries that may deal with temporary and intermittent use roads with the necessary background information for the identification, economic evaluation, and selection of the alternate surfacing systems and to determine...
Resource Type:: Dissertation
Full Text:: Surfacing Systems for Temporary and Intermittent Use Roads. Abstract approved: Robert D. Lay The purpose

Dynamic response of an offshore structure to measured and simulated stochastic wave forces

Creator:: Grecco, Michael G.
Abstract:: The dynamic response of an offshore structure to measured and simulated stochastic wave forces is investigated. The theoretical nondeterministic analysis is performed in the frequency domain for a two-dimensional model. The ocean wave system is assumed to be a zero mean, stationary, ergodic Gaussian process described by a one-dimensional wave...
Resource Type:: Masters Thesis
Full Text:: ' and dimensionless fetch Q' results in where S' (w) = F"(w-,Q-) n n P P g 3 S' (w) = S (o') rl P P

FATE group decision support system in transportation decision making

Creator:: Taekratok, Thaweesak
Abstract:: Two interesting challenges have been created in the traditional transportation planning process through recent adoption of more interactive roles by Federal, State and local transportation agencies and of those representing the communities being impacted by proposed transportation projects. First, the decision-making groups that formerly included solely transportation and related professionals...
Resource Type:: Dissertation

An evaluation of variables affecting the virus removal capabilities of the coagulation-filtration process

Creator:: Chapman, Robert Lyle
Abstract:: The capabilities of the coagulation-filtration process for virus removal were evaluated by constructing and operating a one step, 2 gpm coagulation-filtration pilot plant. Multi-media filters were used without pre-coagulation and sedimentation. A T2 bacteriophage was used as the indicator organism. The plant was operated under a variety of conditions in...
Resource Type:: Masters Thesis
Full Text:: Capabilities of the Coagulation-Filtration Process AN ABSTRACT OF THE THESIS OF Robert Lyle Chapman for the

Evaluation of finite element techniques for soil reinforcement applications

Creator:: Berg, Ryan Robert
Abstract:: A literature review and a computer study are conducted to identify the requirements of finite element programs for the specific use of discrete analyses of reinforced soil structures. The utility of six commercially available programs are appraised with respect to the identified requirements. The results of the study are directed...
Resource Type:: Masters Thesis
Full Text:: reinforcement applications AN ABSTRACT OF THE THESIS OF Ryan Robert Berg for the degree of Master of Science

An eigenvalue wave analysis of a fixed semi-immersed rectangular structure

Creator:: Steimer, Robert Bruce
Abstract:: The problem of a fixed rectangular structure of unit width in a train of simple harmonic normally-incident waves is modeled. The solution allows for variable (1) length and draft of structure, (2) differing depths in the three (fore, aft, and beneath the structure) distinct regions, and (3) wave period. The...
Resource Type:: Masters Thesis
Full Text:: rectangular structure AN ABSTRACT OF THE THESIS OF Robert Bruce Steimer for the degree Master of Ocean

Finite amplitude deep water waves : a comparison of theoretical and experimental kinematics and dynamics

Creator:: Jensen, Robert E.
Abstract:: Problems associated with quantification of deep water wave kinematics and dynamics are examined. Summaries of Stokes' theory and Dean's stream function theory are reported. A computer algorithm is developed to solve the hydrodynamic characteristics for Stokes' fifth and third order and linear theories. Tests are initiated to verify the results...
Resource Type:: Masters Thesis
Full Text:: theoretical and experimental kinematics and dynamics AN ABSTRACT OF THE THESIS OF Robert Edward Jensen for

Curriculum synthesis and amelioration : a case study of undergraduate civil engineering

Creator:: Hamernik, Robert E.
Abstract:: The dynamic philosophy of education as applied to the undergraduate Civil Engineering program has been influenced by such factors as the introduction of new theories, the demands and needs of our society and the personnel responsible for teaching. These changes are reflected in the curriculum as witnessed by a historical...
Resource Type:: Dissertation
Full Text:: undergraduate civil engineering AN ABSTRACT OF THE THESIS OF Name: ROBERT E. HANERNIK for the DOCTOR OF

Slotted-bolted friction damper as a seismic energy dissipator in a braced timber frame

Creator:: Tjahyadi, Alfred
Abstract:: Friction dampers have been used successfully to dissipate seismic energy in steel and concrete structures. The application is new to timber structures. The objectives of this research were to design a slotted bolted connection (SBC) and evaluate its potential as a passive energy damper in timber brace. The research was...
Resource Type:: Masters Thesis
Full Text:: protocol. The six SBCs were later assembled in pairs to make three dual Robert J. Leichti Rakesh Gupta

Evaluation of porous pavements used in Oregon

Creator:: Younger, Krey
Resource Type:: Masters Thesis
Full Text:: thank the rest of the members of my graduate committee, Professor Robert Layton and Dr. Rita Leahy for

Assessing Seismic Rockfall Impacts on Mobility in Transportation Corridors

Creator:: Holtan, Katherine
Abstract:: The climate and geologic conditions of the Pacific Northwest leaves its roads highly susceptible to rockfall hazards. Rockfalls often occur on steep slopes that experience heavy rainfall, groundwater seepage, or strong shaking from earthquakes. The unpredictable nature of these events often creates substantial problems for communities, transportation infrastructure, and the...
Resource Type:: Masters Thesis
Full Text:: thank my committee members Tracy Arras and Robert Kennedy for their assistance reviewing this thesis

Modeling shallow-water hydrodynamics : rotations, rips, and rivers

Creator:: Long, Joseph W.
Abstract:: Hydrodynamic models are used as a diagnostic tool to understand the temporal variability of shallow-water processes that are difficult to completely resolve with traditional field measurements. For all simulations, modeled quantities are qualitatively or quantitatively compared with available measurements to gain confidence in conclusions derived from the modeled results. In...
Resource Type:: Dissertation
Full Text:: much different time scales (O(min) vs. O(hours-weeks)). They each have an effect on sediment

Extreme Wave Runup and Runup Variability on Beaches

Creator:: Li, Chuan
Abstract:: Wave runup is an important physical process that affects nearshore sediment transport, coastal erosion, and flooding. Large and unexpected runup events can also be dangerous to beach goers. Extreme runup statistics are essential parameters used in engineering design of marine structures and in coastal management. Although the study of runup...
Resource Type:: Dissertation
Full Text:: . Tuba Özkan-Haller (also Chapters 3 and 4), Gabriel Garca-Medina (also Chapter 3), Robert A. Holman

Microcosm studies of bioaugmentation with a butane-utilizing mixed culture : microbial community structure and 1,1-DCE cometabolism

Creator:: Lim, Hee Kyung
Abstract:: The 1,1-dichloroethene (1,1-DCE) cometabolic transformation abilities of indigenous and bioaugmented microorganisms were compared in microcosms constructed with groundwater and aquifer solids from the Moffett Field site, CA. Microbial community structure in the microcosms and possible community shifts due to 1,1-DCE transformation stress was evaluated by terminal restriction fragment length polymorphism...
Resource Type:: Masters Thesis
Full Text:: . Robert W. Collier for serving as Graduate Council Representative on my committee. It was very lucky for

Hydraulic influences on pool morphology : a laboratory investigation

Creator:: Frizenschaf, Jacqueline
Abstract:: A flume study was conducted to investigate the influences of changing hydraulic conditions on the bed morphology of a scoured pool. During a simulated storm runoff event, responses of the pool were tested under different conditions: clearwater flow, sediment supply at steady rates, and two different sediment mixtures of the...
Resource Type:: Masters Thesis
Full Text:: examination committee members Dr. Robert L. Beschta and Dr. Jonathan D. Istok, who both helped me to further

A validation of the Oregon State University driving simulator

Creator:: Brown, Lacy S.
Abstract:: Driving simulation is widely accepted as a safe, effective, and economical alternative for investigating driver behavior in a variety of contexts. However, in order to apply simulator-based research results to real-world settings, the performance measures acquired through simulated driving experiments must first be validated. This research was aimed at validating...
Resource Type:: Masters Thesis
Full Text:: . David Hurwitz, Dr. Robert Layton, Dr. Kate Hunter-Zaworski, and Dr. Thomas Plant, thank you for your

Finite element analysis of wave interference effects between large structures

Creator:: Huang, Min-chih
Abstract:: A numerical calculation procedure for the hydrodynamic interference effects between large multiple structures interacting with linear ocean waves is presented in this study. Viscous effects are neglected and the hydrodynamic pressure forces are assumed to be inertially dominated. A finite element method which incorporates radiation boundary dampers is adopted to...
Resource Type:: Dissertation
Full Text:: research. Acknowledgements must be made to other members of the thesis committe; including Dr. Robert T

Modeling sediment transport, channel morphology and gravel mining in river bends

Creator:: Nam, Ilgi
Abstract:: A technique is developed and tested to analyze the interaction of flowing water, bed topography, and bedload sediment transport in meandering channels where gravel bars are removed. The method relates the local velocity distribution, bed shear stress and sediment transport conditions to the local bed configuration in river bends before...
Resource Type:: Dissertation
Full Text:: the members of my graduate committee, Professors David A. Bella, Jonathan D. Istok, Robert E. Wilson

Examination of lateral stiffness and strength of pitched residential roof diaphragms with implications for seismic design.

Creator:: Kirkham, William J.
Abstract:: There are about 80 million single-family dwellings (SFD) in the United States, predominantly of wood-frame construction. Of these, 68% are owner occupied. A home is typically the largest single investment of a family, and is often not covered by earthquake insurance, even where it is available. Of all SFD in...
Resource Type:: Dissertation
Full Text:: Peterson (1983) on wood diaphragm testing and design and by van de Lindt (2004) on shearwall testing

Height Modernization from Static GPS Networks in Oregon: Evaluating NGS Guidelines and OPUS-Projects

Creator:: Kerr, Darren J.
Abstract:: Determining accurate elevations is important for many engineering and scientific applications, and finding these heights via GNSS increases efficiency and significantly reduces the costs as compared to precise geodetic leveling. The National Geodetic Survey (NGS) has published guidelines for determining both ellipsoidal and orthometric heights with GPS to within 2...
Resource Type:: Masters Thesis
Full Text:: . Paul Vincent, Dr. Michael Olsen, and Professor Robert Schultz. Your time and assistance in reviewing

The analysis of directional wave spectra from current and pressure measurements

Creator:: Lin, Li-hwa
Abstract:: Directional wave spectra have been estimated in this study based upon simultaneous subsurface measurements of current and pressure. Two previously developed methods, the stochastic and deterministic approaches, have been reviewed and restudied. It is demonstrated by means of the Correlation Theorem that the stochastic and deterministic approaches are, under certain...
Resource Type:: Masters Thesis
Full Text:: . Robert E. Wilson and Dr. Edward H. Piepmeier for their participation as Graduate Committee. Financial

Determination of structural layer properties of aggregate and asphalt surfaced roads

Creator:: Rwebangira, T.
Abstract:: This study involved the determination of the structural layer properties of aggregate and asphalt surfaced pavements for use in the evaluation of pavement load carrying capacity and the seasonal effects of moisture. This was achieved by the use of Nondestructive Testing Methods (NDT) and backcalculation techniques. Pavement surface deflection measurements...
Resource Type:: Dissertation
Full Text:: members of my graduate committee, Professors Chris Bell, Robert Layton, David Thomas and Phil Humphrey

Wave-current interaction induced by standing long waves in the surf zone

Creator:: Phaksopa, Jitraporn
Abstract:: This dissertation has focused on the charateristics of bubbles generated by breaking waves and the feedback of wave-current interaction on the forcing mechanism of low frequency wave especially basin seiching wave. For the first study, Optical image capture observations of breaking waves in a laboratory surf zone are presented. The...
Resource Type:: Dissertation
Full Text:: my dissertation. I also appreciate the other committee members, Prof. Robert Holman, Prof. Harry Yeh

Microwave scattering from surf zone waves

Creator:: Catalán Mondaca, Patricio A.
Abstract:: Wave breaking in the surf zone is an important forcing mechanism on the generation of nearshore currents and in the driving of sediment transport. At the same time, wave breaking can have significant spatial and temporal variability that needs to be accounted for in the description of nearshore processes. Remote...
Resource Type:: Dissertation
Full Text:: −1 s, cm], as in turbulence and sediment suspension processes; to [decades, O(100) km] for sea level

Mapping Nearshore Bathymetry with Spaceborne Data Fusion and State Space Modeling

Creator:: Forfinski-Sarkozi, Nicholas A.
Abstract:: Despite numerous techniques for measuring and estimating water depth, bathymetry in the nearshore zone is notoriously difficult to map. Dangerous sea states, noisy environmental conditions, and expensive survey operations, particularly in remote areas, contribute to the difficulties of obtaining data along the coast. Global datasets, derived mainly from satellite altimetry...
Resource Type:: Dissertation
Full Text:: . Anne Nolin, and Dr. Robert Kennedy for their support and expertise. I would also like to thank my

Fluid-structure interaction analysis with the particle finite element method

Creator:: Zhu, Minjie
Abstract:: To facilitate the evaluation and design of structures subjected to fluid loading, a study of fluid-structure interaction (FSI) using the particle finite element method (PFEM) is presented to approximate the responses and sensitivities of structures which interact with fluid. A wide range of structural types are permissible by making no...
Resource Type:: Dissertation

Development of a mechanistic overlay design procedure for flexible pavements

Creator:: Zhou, Haiping
Abstract:: This dissertation describes the development of a mechanistic overlay design procedure. The mechanistic analysis represents a new trend in both new pavement and overlay design. The greatest advantage of the mechanistic pavement analysis is that it considers the fundamental characteristics of materials to be used, is capable of considering changes...
Resource Type:: Dissertation
Full Text:: . My appreciation is also expressed to the members of my graduate committee, Professors Robert Layton

Performance-based seismic design of light-frame shearwalls

Creator:: Kim, Jun Hee
Abstract:: Performance-based design has gained interest in recent years among structural designers and researchers. Performance-based design includes selection of appropriate building sites, structural systems and configurations, as well as analytical procedures used in the design process, to confirm that the structure has adequate strength, stiffness and energy dissipation capacity to respond...
Resource Type:: Dissertation
Full Text:: thank my graduate committee members: Dr. Solomon Yim, Dr. Robert Leichti, Dr. Thomas Miller, and Dr

Cross-section fatal crash type prediction models

Creator:: Zhu, Hong
Abstract:: The rural two-lane highway in the southeastern United States is frequently associated with a disproportionate number of serious and fatal crashes. The major research objectives are to investigate the relations between probabilities of fatal crash type occurrence and potential contributing factors from road geometric design characteristics and roadside, environmental features....
Resource Type:: Dissertation
Full Text:: , committee members: Dr. Kate Hunter-Zarworski, Dr. Robert Layton, Dr. Daniel Schafer, and Dr. Jon

Incipient motion and particle transport in gravel-bed streams

Creator:: Matin, Habib
Abstract:: The incipient motion of sediment particles in gravel-bed rivers is a very important process. It represents the difference between bed stability and bed mobility. A field study was conducted in Oak Creek, Oregon to investigate incipient motion of individual particles in gravel-bed streams. Investigation was also made of the incipient...
Resource Type:: Dissertation
Full Text:: extended to Dr. David Bella, Dr. Johnatan Istok, Dr. Robert Beschta, and Dr. Benno Warkentin for

Advancing Spatial Data Engineering and Analysis: Integrative Approaches with GIS, Statistical Modelling, and Deep Learning

Creator:: Krivova, Maria
Abstract:: Geospatial data analysis is a multifaceted discipline encompassing the collection, processing, and visualization of diverse datasets. It models and delineates the interactions of people, objects, and phenomena within geographical spaces and predicts patterns based on the relationships between different locations. Despite significant advancements in geospatial data engineering and analytics over...
Resource Type:: Dissertation
Full Text:: and Robert Richard provided guidance and editing for the second chapter of this dissertation, titled

Smooth and roughened horizontal cylinders in periodic waves and current

Creator:: Teng, Chung-chu
Resource Type:: Dissertation
Full Text:: due to the members of the Graduate Committee: Dr. Robert T. Hudspeth; Dr. William G. McDougal; Dr

Nonlinear oscillations, bifurcations and chaos in ocean mooring systems

Creator:: Gottlieb, Oded
Abstract:: Complex nonlinear and chaotic responses have been recently observed in various compliant ocean systems. These systems are characterized by a nonlinear mooring restoring force and a coupled fluid-structure interaction exciting force. A general class of ocean mooring system models is formulated by incorporating a variable mooring configuration and the exact...
Resource Type:: Dissertation
Full Text:: committee: Dr. Ron B. Guenther, Dr. Robert T. Hudspeth, Dr. John W. Leonard and Dr. George W. Brown, for

Amplification of solitary waves along a vertical wall

Creator:: Li, Wenwen
Abstract:: Reflection of an obliquely incident solitary wave at a vertical wall is studied experimentally in the laboratory wave tank. Precision measurements of water-surface variations are achieved with the aid of laser-induced fluorescent (LIF) technique and detailed temporal and spatial features of the Mach reflection are captured. During the development stage...
Resource Type:: Dissertation
Full Text:: . Merrick Haller, Dr. Robert Higdon and Dr. James Liburdy, who have generously gave your time and energy

Analysis of spatial data from terrain models for landslide predictive mapping

Creator:: Santha, Rubini
Abstract:: Landslides are a pervasive hazard that can result in substantial damage to properties and loss of life throughout the world. To understand the nature and scope of the hazard, landslide hazard mapping has been an area of intense research by identifying areas most susceptible to landslides in order to mitigate...
Resource Type:: Dissertation
Full Text:: committee members Dean. Scott Ashford, Dr.Dan Gillins, Prof. Robert Schultz, and Dr. Marc Norcross for

Deterministic and stochastic behaviors of a piecewise-linear system

Creator:: Mha, Ho-Seong
Abstract:: The (nonlinear) response behavior of a piecewise-linear system is investigated under both deterministic and stochastic excitations in this study. A semi-analytical procedure is developed to predict the system behavior by evaluating the joint probability density functions of the Fokker-Planck equations of the stochastic piecewise-linear system under random excitations via a...
Resource Type:: Dissertation
Full Text:: . John Peterson, Prof. Robert E Wilson, and Prof. Stephen E Binney for their interest and thoughtful

Assimilation of Multi-Sensor Data into Numerical Hydrodynamic Models of Inland Water Bodies

Creator:: Javaheri, Amir
Abstract:: Numerical models are effective tools for simulating complex physical processes such as hydrodynamic and water quality processes in aquatic systems. The accuracy of the model is dependent on multiple model parameters and variables that need to be calibrated and regularly updated to reproduce changing aquatic conditions accurately. Multi-sensor water temperature...
Resource Type:: Dissertation
Full Text:: temperatures and the adjusted remotely sensed skin temperature observations from 5.6 ᵒC to 0.51 o C (i.e., 91

Numerical Studies on Fluid-Structure Interaction and Applications

Creator:: Chen, Ming
Abstract:: Fluid-structure interaction (FSI) has been of significant research interest worldwide over the past several decades because of its variety of applications in both offshore and coastal engineering. Researchers analyzing FSI systems rely heavily on experimental tests in model scale in laboratories or large-scale sea trials. However, these tests are often...
Resource Type:: Dissertation
Full Text:: minor advisor, Prof. Robert Higdon, and the rest of the members of my committee, Prof. Andre Barbosa

Stochastic analysis of a nonlinear ocean structural system

Creator:: Lin, Huan
Abstract:: Stochastic analysis procedures have been recently applied to analyze nonlinear dynamical systems. In this study, nonlinear responses, stochastic and/or chaotic, are examined and interpreted from a probabilistic perspective. A multi-point-moored ocean structural system under regular and irregular wave excitations is analytically examined via a generalized stochastic Melnikov function and Markov...
Resource Type:: Dissertation
Full Text:: . Appreciation is also given to other members of my committee: Prof. Robert M. Burton, Prof. John W. Leonard

Aerobic biotransformation of chlorinated aliphatic hydrocarbons by a benzyl alcohol grown mixed culture : cometabolism, mechanisms, kinetics and modeling

Creator:: Tejasen, Sarun
Abstract:: The aerobic transformation of TCE and cis-DCE by a tetrabutoxysilane-grown microorganism (Vancheeswaran et al., 1999) led to the investigation of novel substrates, including benzyl alcohol, for promoting cometabolism. The culture grew on carboxylic compounds and alcohols, but did not grow on formate, methanol, methane, propane, butane, ethylene, benzene, toluene, or...
Resource Type:: Dissertation
Full Text:: alcohol- and phenol-grown cells oxidized toluene to o-cresol, which indicated the similarity between

The effect of dissolved oxygen concentration on the activated sludge process

Creator:: Swanson, Gregory R.
Abstract:: Since the introduction of pure oxygen activated sludge systems in the late 1960's, proponents have claimed several advantages resulting from the elevated dissolved oxygen (DO) levels maintained. However, numerous comparative studies have failed to produce a consensus of professional opinion regarding the validity of these claimed advantages. The purpose of...
Resource Type:: Dissertation
Full Text:: for C o 0.5 ranged up to about 1.0 mg/1 and for Co up to about 10 mg/1 for culture samples with

An evaluation of coastal Oregon's marginal aggregates

Creator:: Clemmons, Gregory H.
Abstract:: Coastal Oregon is deficient in quality construction aggregates. There is, however, an abundance of lower quality, or marginal, aggregate available for construction purposes. An evaluation of these marginal aggregates is the purpose of this paper. There are four classes of marginal rocks found on the Oregon Coast. Basalts, high in...
Resource Type:: Masters Thesis
Full Text:: ). However, Van Atta and Ludowise (4,5) suggest that such a generalization should not be made. The reason

Petroleum refinery residuals : a recycling feasibility study

Creator:: Hoffman, Andrew J.
Abstract:: Large quantities of unused heavy oil and residual waste products from the petroleum refining industry were deposited in on-site landfills, pits, and lagoons, prior to the promulgation of regulations governing their disposal and technology development that would further utilize and/or recycle these materials. Contacting petroleum products with sulfuric acid for...
Resource Type:: Masters Thesis
Full Text:: phenomena occurring in the PRR-lime 15 .27 C C 0 -1 111+11 f Zn01-1 I 2 Zn2 I 3 4 5 -6 -7 8 O

The mechanics of gas transfer in oxidation lagoons

Creator:: Mausshardt, Donald Bruce
Resource Type:: Masters Thesis
Full Text:: Verria Van Loan TAFLE OF CONTENTS P agø INTRODUCTIO , . , , , , , , . . . i Object cf this

The degradation of kraft pulping wastes in estuarine waters

Creator:: O'Neal, Gary Lewis, 1938-
Abstract:: The degradation of kraft pulping wastes in estuarine waters was measured in terms of the following parameters: five-day 20°C B.O.D., the Pearl-Benson Index, and toxicity to the bay mussel (Mytilus edulis L.). The waste tested was the total effluent from a combined pulp and paper mill producing 430 tons of...
Resource Type:: Dissertation
Full Text:: B. O. D. , the Pearl- Benson Index, and toxicity to the bay mussel (Mytilus edulis L. ). The waste

Design criteria for waste water lagoons in Oregon

Creator:: Putnicki, George John
Abstract:: Waste water lagoons have been used as a satisfactory means of treating domestic and certain industrial wastes in many parts of the country. Many of the parameters that govern the applicability of this type of treatment process are climatic in nature, and critical evaluation of local climatic conditions, as well...
Resource Type:: Masters Thesis
Full Text:: I I ó d 12 I I I - - 12 where D is oxygen deficit at the observed temperature or

A study of the coagulation of kraft effluent by sea water

Creator:: Andrews, Ben Neal
Abstract:: The coagulation of effluent from the kraft pulping and papermaking process was investigated. The amount of material coagulated from saline mixtures of the effluent is determined as a function of time, salinity, kraft effluent concentration, and mixture pH. Individual sources of salinity include sea water and several different solutions of...
Resource Type:: Masters Thesis
Full Text:: APPROVED: Dean o? Graduate School Date thesis is presented - f / ° c d . .... .,.. ..._ ... Typed by

Removal of dieldrin from water by granular-activated carbon

Creator:: Hardman, Michael Harvey
Abstract:: A 9.0 ppb solution of dieldrin in water was passed through a granular-activated carbon bed at the rate of 4 gpm/sq. ft. The performance of the carbon was monitored from sampling ports at bed depths of 2-1/4 and 8-1/4 inches. Isotherm tests were also run with a 9.0 ppb dieldrin...
Resource Type:: Masters Thesis
Full Text:: OF DIELDRIN FROM WATER BY GRANULAR - ACTIVATED gARBON Abstract approved A 9. O ppb solution of

Risk and Reward Perception and Risk-Taking: Applicability, Relationship, and Implication in Construction Safety

Creator:: Azeez, Mohammed N.
Abstract:: While safety improvements have been made in the construction industry, construction still experiences one of the highest numbers of fatalities annually compared to other industries in the United States with over 970 fatalities in 2016 alone. This number of fatalities drives researchers and safety managers to improve safety measures and...
Resource Type:: Dissertation

Computer evaluation of binary vapor-liquid equilibrium data

Creator:: Macan, John Warren
Resource Type:: Masters Thesis
Full Text:: c the oser of such data. Consequently, O. ed1lch and A. r. Kiater (7), (6) have proposed two

Quantifying the Safety and Mobility Benefits of Connected Vehicle Technologies under Varying Levels of Market Penetration and Traffic Volume : An Agent-Based Modeling Framework

Creator:: Abdulsattar, Harith M.
Abstract:: The advancement of the cutting-edge technologies of advanced driver assistance systems (ADAS) hold promises to reshape the future of the transportation system. The concept of connected (CV) and connected automated vehicles (CAV) technologies are live examples of the future transportation. Vehicle communication technology is expected to impact conventional traffic conditions....
Resource Type:: Dissertation
Full Text:: different road situationswhile advancing the work zone safety. On the contrary, van Arem et al. (2006) has

Multiphase flow in homogeneous and bedded porous media

Creator:: Schroth, Martin H.
Resource Type:: Dissertation
Full Text:: Chair o partment of Civi Engineering Dean of Gra te School I understand that my dissertation will

Random wave velocity field from periodic theory

Creator:: Kobune, Koji
Abstract:: Random waves are often expressed as a mathematical superposition of an infinite number of sinusoidal components. The mean square spectral density of the water surface elevation is often called the wave spectrum. The zero upcrossing wave heights usually have a Rayleigh probability distribution. However, the design wave concept is still...
Resource Type:: Masters Thesis
Full Text:: hertfelt thanks to Dr. Tokuo Yamamoto, Dr. Robert T. Hudspeth and Dr. Charles K. Sollitt, Professors of

The characterization and physical-chemical treatability of log pond waters

Creator:: Blanton, Guy Ivan
Abstract:: The treatability of waters from four log ponds in Oregon by physical and chemical treatment methods was investigated. Treatment processes included sand filtration, activated carbon contact and coagulation with aluminum sulfate. Preliminary studies were made at each log pond to determine the homogeneity of the pond water for sampling purposes...
Resource Type:: Masters Thesis
Full Text:: (Laboratory Evaluation of... , 1966). 100 o -2 (-1c)m cC o 0 0 E COI. b0 ,, 0) 10 t u ..E. 0 -6) co

Dynamic response of steel structures with semirigid connections

Creator:: Grant, Joseph Edward
Abstract:: The nonlinear response of a ten-story steel structure with semirigid girder connections is studied under conditions of dynamic loading. The dynamic loading used in this study is the North-South component of the May 18, 1940 El Centro, California earthquake. To deal with the complexity of the problem the structure is...
Resource Type:: Dissertation
Full Text:: previous static tests published by J. F. Baker (1). C o n n e c t i o n M M w -=w c cn 11

Hydrodynamic forces on a horizontal cylinder under waves and current

Creator:: Teng, Chung-chu
Abstract:: By assuming the linear superposition principle to be valid, the hydrodynamic forces on a horizontal cylinder under waves and current are examined. In this study, towing a cylinder in waves is used to simulate a cylinder under waves and current. The experimental technique is proved valid through theoretical considerations and...
Resource Type:: Masters Thesis
Full Text:: . Acknowledgements must be made to Dr. Robert T. Hudspeth and Dr. Charles K. Sollitt for their review and advice on

A torsional investigation of a concrete I grider

Creator:: Martin, Roy Charles
Abstract:: This paper investigates a particular bridge construction technique which could result in a significant torsional moment. The structural member under consideration is a prestressed concrete girder for which no torsional consideration is made. Torsional shear stresses can be adequately approximated for an I-shaped girder. Laboratory model tests were performed to...
Resource Type:: Masters Thesis
Full Text:: assistance and guidance. I would also like to thank Mr. Robert Hafstad, employee of the California Bridge

A numerical model for the fate and transport of chlorinated phenols in groundwater

Creator:: Lee, Sang Bong
Abstract:: The objective of this study was to develop a numerical model for the movement and fate of chlorinated phenols in groundwater. In the first part, a numerical model for several different equilibrium and nonequilibrium sorption processes under isothermal conditions is developed for one-dimensional, steady-state water flow in soil columns. The...
Resource Type:: Dissertation
Full Text:: experiments (Goltz and Roberts, 1986; Curtis et al., 1986; Robert et al., 1986). Valocchi (1985) introduced

Aerobic cometabolism of chlorinated aliphatic hydrocarbons by subsurface microbes grown on methane, propane and butane from the McCellan Air Force Base

Creator:: Tovanabootr, Adisorn
Resource Type:: Masters Thesis
Full Text:: by Van Hylckama Vlieg et al., 1996. The detection of unstable epoxides of chlorinated ethenes was

Hydrology studies applicable to Oregon

Creator:: Johnson, Arthur Fayette
Resource Type:: Masters Thesis
Full Text:: States Weather Bureau; to Major Oscar o. Keuntz, and the engineering staff of the Portland office of

Consolidation characteristics of calcareous deep sea-floor sediments from the Panama Basin

Creator:: Kao, Yeoung Ting
Abstract:: Calcareous sediments containing a large percentage of foraminiferal microskeletal tests were taken from sites in the Panama Basin and subjected to an investigation to determine the consolidation characteristics of this type of soil. The consolidation-stress curves and the time rate of consolidation curves in particular were investigated in this study....
Resource Type:: Masters Thesis
Full Text:: to Dr. Ted Moore for providing the microphotographs and to Dr. T. H. van Andel, who provided the

Pressure distribution around a circular cylinder resting on a flat boundary in an oscillating fluid

Creator:: Johnson, Ronald Ernest
Abstract:: This study was undertaken to provide information needed in the design of ocean outfalls. A review of past investigations concerning forces on submerged objects is presented. Objects independent of any boundary and cylinders in boundary contact are considered. A solution for pressure distribution about a circular cylinder resting on a...
Resource Type:: Masters Thesis
Full Text:: of this study and to Jayne Tichenor and Phyllis Van Zyl for their assistance in data processing and

Numerical simulation of anaerobic reductive dechlorination of CAHs in continuous flow systems

Creator:: Mustafa, Nizar Ahmad
Abstract:: Halogenated organic compounds have had widespread and massive applications in industry, agriculture, and private households, for example, as degreasing solvents, flame retardants and in polymer production. They are released to the environment through both anthropogenic and natural sources. The most common chlorinated solvents present as contaminants include tetrachloroethene (PCE, perchloroethene)...
Resource Type:: Dissertation
Full Text:: Gibbs free energies (ΔG o )for various electron acceptors

A determination of ultimate pile capacity in clayey silt

Creator:: Thompson, Duane Melvin
Abstract:: Predetermining the ultimate capacity of piles driven into purely cohesive soils and purely cohesionless soils involves, respectively, the consideration of soil shear strength in a completely undrained and a completely drained condition. For the intermediate cases concerning soils that possess both cohesion and internal friction (silts, clayey silts, sandy clays,...
Resource Type:: Masters Thesis
Full Text:: ) Title: A DETERMINATION O' ULTIMATE PILE CAPACITY IN CLAYEY SILT a /ii) Abstract approved: Redacted for

Vertical jet diffusion in non linear density stratified fluid

Creator:: Baumgartner, D. J. (Donald John), 1933-
Abstract:: The simplified equations of motion proposed by Morton to determine the extent of vertical travel of a forced plume in a linear density stratified environment were re-written and solved in a way which allowed them to be applied to any non linear profile of density. For application to any specific...
Resource Type:: Dissertation
Full Text:: is presented May 11, 1967 ----------~--~--~~----------------- Typed by C 1 o ve r R e dfe r n f o r

Modeling estuary pollution by computer simulation

Creator:: Grenney, William J.
Abstract:: A digital computer model was developed to simulate the time and space distribution of a dissolved pollutant in an estuary. The program is basically a one-dimensional finite-difference model, but two dimensions can be represented by attaching together several one-dimensional channels. The influence of convection, dispersion and decay are included in...
Resource Type:: Masters Thesis
Full Text:: weighting factor for obtaining the average value. Soiv- ing Equation 4 for C(N T+T) gives: 11-KT(1-O)1 (5

Anaerobic reductive dechlorination of TCE and TCFE in TCE contaminated sediments : enhanced bioremediation and bioaugmentation

Creator:: Lee, Jae-Hyuk
Abstract:: This research focused on the enhanced reductive dechlorination of trichloroethene (TCE) and its surrogate, trichlorofluoroethene (TCFE), using two bioremediation methods in anaerobic conditions. Two anaerobic bioremediation studies were conducted to investigate the effects of microbial communities in the presence of different electron acceptors and donors during anaerobic reductive dechlorination of...
Resource Type:: Dissertation
Full Text:: .; Bezborodnikov, S.; Davies, S.; Forney, L.; Heuer, H.; Kawka, O.; Mayotte, T.; Sepulveda-Torres, L.; Smalla, K

Depth estimation and frontal imaging via X-band marine radar

Creator:: Honegger, David Andrew
Abstract:: This dissertation focuses on two core aspects of remote sensing: (a) interpretation of the remotely sensed data to identify and characterize sea surface features of interest, and (b) the quantitative analysis of previously characterized features to produce robust estimates of geophysical variables. Specifically, these aspects are addressed in the context...
Resource Type:: Dissertation
Full Text:: . CONTRIBUTION OF AUTHORS Chapter 2: Dr. Robert Holman provided insight into the cBathy algorithm (and the

Breaking wave problems and probabilities

Creator:: Yeh, Rong-chuen
Resource Type:: Dissertation
Full Text:: guidance, support and invaluable help with this research. Deep appreciation is extended to Dr. Robert T

Roughness and geometry effects of engineered log jams on 1-D flow characteristics

Creator:: Valverde, Rachelle S.
Abstract:: The re-introduction of large woody debris (LWD) into streams and rivers for stream restoration purposes is rapidly growing. Engineered log jams (ELJs) are man-made structures intended to mimic natural LWD structures, designed and installed to protect stream banks from erosion while increasing habitat diversity. Several studies have evaluated the flow...
Resource Type:: Masters Thesis
Full Text:: 30 40 50 60 70 E le v a ti o n ( m ) Station (m) 82 83 84 85 86 87 88 89

Tsunami Simulation Using OpenSees : Validation of Bridge Response and Exploration of Shallow Water Flow

Creator:: Cressman, Luke R.
Abstract:: The finite element software framework, OpenSees, has been used by researchers to simulate the response of structural and geotechnical systems to earthquake loading. Implementation of the Particle Finite Element Method (PFEM) has made it possible to simulate hydrodynamic forces through fluid-structure interaction (FSI) in OpenSees. To validate the FSI implementation...
Resource Type:: Masters Thesis
Full Text:: (s) F o rc e ( K N ) Horizontal Force (sim) Horizontal Force (PWRI) Design Drag Force

Regional and Site-Specific Vulnerabilities of the Western Power Grid from a M9.3 Cascadia Subduction Zone Earthquake

Creator:: Lathrop Eve D.
Abstract:: The likelihood of a Cascadia Subduction Zone (CSZ) earthquake is estimated between 37 to 42% in the next 50 years, leading to strong shaking, liquefaction, landsliding, and other seismic ground failure resulting in major impacts to critical lifelines such as the western power grid. Electrical power is essential for continued...
Resource Type:: Masters Thesis

Development of structural layer coefficients for open graded asphalt emulsion mixes

Creator:: Hatch, David Russell
Abstract:: This paper describes the development of structural layer coefficients for open graded asphalt emulsion surfacing layers which can be used with the AASHO pavement design method, as modified by the U. S. Forest Service, Region 6. A field survey conducted to document the history, performance and material characteristics of in-service...
Resource Type:: Masters Thesis
Full Text:: Highway Department 13 Soil Support Correlations Developed by Van Til, et al. 44 14 Illustration of the

Fractal solutions to the long wave equations

Creator:: Ajiwibowo, Harman
Abstract:: The fractal dimension of measured ocean wave profiles is found to be in the range of 1.5-1.8. This non-integer dimension indicates the fractal nature of the waves. Standard formulations to analyze waves are based on a differential approach. Since fractals are non-differentiable, this formulation fails for waves with fractal characteristics....
Resource Type:: Dissertation
Full Text:: grateful to him for this and for giving so freely of his time. I should also thank Professor Robert

Developing tools to improve tsunami resilient design of coastal structures

Creator:: Thomas, Seth Alan
Abstract:: Over the last decade the world has seen three major tsunamis strike the coasts of Indonesia, Samoa, and Chile. These tsunamis have caused significant losses of life and property on the coastal cities of these and nearby countries. The NEES (Network for Earthquake Engineering Simulation) Housesmash project was created to...
Resource Type:: Masters Thesis
Full Text:: Simulation (NEES). Thanks to the project PI’s, Dan Cox, Rakesh Gupta, John van de Lindt, and Francisco

In-plane stability of truss chords with application to wood trusses

Creator:: Kasal, Bohumil
Abstract:: Stability analysis of truss chords loaded by a combination of axial and lateral forces is studied. A simple model based on beam-column theory is proposed and analyzed. The continuous truss chord is replaced by a beam column loaded by end moments replacing the effect of adjacent members. The solution yields...
Resource Type:: Masters Thesis
Full Text:: June 1994 APPROVED: Assistant Professor f Civil Engineering in charge of major Chair o Department

Evaluation of estuarine channel conditions in Coos Bay, Oregon using side-scan sonar

Creator:: Hartman, Gregory L.
Abstract:: Side-scan sonar records in Oregon's Coos Bay estuary navigation channels were obtained at intervals of two to three months during the November 1974 - October 1975 time period from Coos Bay Channel Mile 11+50 to 15+20, and from a reach in the Marshfield Channel. A limited side-scan survey effort was...
Resource Type:: Masters Thesis
Full Text:: Privacy .kOf4.--s-o. of Civil Engineering in charge of major Redacted for Privacy Head Department of

Storm runoff response from roadbuilding and logging on small watersheds in the Oregon Coast Range

Creator:: Hsieh, Frederic Shu-kong
Abstract:: The effects of roadbuilding, logging and burning upon stream runoff responses to individual storms are evaluated for the Alsea experimental watersheds, located in the Oregon Coast Range, The parameters analyzed are peak discharge, induced peak discharge, time-to-peak, and storm-runoff volume. The volume parameter is further sub-divided into total, quick, delayed,...
Resource Type:: Masters Thesis
Full Text:: Professors Robert Filmer, Department of Civil Engineering and Charles Land, Statistics Department, and to Mr

Transportation network connectivity, facilities encouraging walkability, and crime

Creator:: Bornasal, Floraliza B.
Abstract:: This thesis explores the relationship between crime, transportation network connectivity, and engineered facilities built to increase walkability through a case study of twenty-five sites within the city of Spokane, Washington. Using data spanning between 2008 and 2010, the author developed a GIS model representing conditions of the built environment, social...
Resource Type:: Masters Thesis

Understanding the Similarities and Differences Between Academia and the Engineering Workplace through Barriers to Adoption, Epistemic Beliefs, and Problem-Solving Behavior

Creator:: Gestson, Sean Lyle
Abstract:: Engineering education research has led to a greater understanding of the gap in preparedness of students for the engineering industry. Multiple studies comparing the workplace and academic contexts and the participants in those contexts (i.e., students, faculty, and engineering practitioners) have emphasized similarities and differences between the two contexts by...
Resource Type:: Dissertation

Will wetlands restoration plans today still be effective tomorrow? Evaluation of performance of potential wetlands for peak flow reduction in future climate scenarios in the Eagle Creek Watershed, IN

Creator:: Walters, Kelli M.
Abstract:: Global climate change is expected to exaggerate the severity of floods and droughts and increase the frequency of extreme streamflow events in the Midwestern United States. Managing these projected impacts poses a major challenge for water resources, conservation, and land use management. Wetlands have been considered as a conservation strategy...
Resource Type:: Masters Thesis
Full Text:: , & Prudhomme, 2013; Leander, Buishand, van den Hurk, & de Wit, 2008; Lenderink, Buishand, & Deursen, 2007

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Creator:: Michalsen, Mandy M.
Abstract:: Metal and hydrogen ion acidity and extreme nitrate concentrations typical of Department of Energy (DOE) legacy waste sites pose formidable challenges to successful implementation of in situ bio-immobilization. Intermediate-scale (~ 2.5 m), flow through models of an in situ bio-barrier were constructed to investigate U and Tc removal from groundwater...
Resource Type:: Dissertation
Full Text:: Robert Laughman for there excellent craftsmanship and for their analytical assistance in the laboratory

Estimating the impacts of a vehicle mileage fee using a discrete continuous choice modeling approach

Creator:: Valluri, Divya
Abstract:: The gasoline tax, the main source of highway revenue is no longer a viable source of funding to maintain the existing highways. Many states in the United States are already using revenues from other sources such as sales tax and income tax to fund new highways. Oregon along with many...
Resource Type:: Masters Thesis
Full Text:: Table 5.2. 20 Table 5-2: Descriptive statistics for vehicle number choice O

Bench-scale study for the bioremediation of chlorinated ethylenes at Point Mugu Naval Air Weapons Station, Point Mugu California, IRP Site 24

Creator:: Keeling, Matthew Thomas
Abstract:: Laboratory scale microcosm studies were conducted using site specific groundwater and aquifer solids to assess the feasibility of stimulating indigenous microorganisms in-situ to biologically transform Trichloroethylene (TCE) and its lesser chlorinated daughter products dichloroethylene (DCE) and vinyl chloride (VC). Three different treatments were conducted to determine the best approach for...
Resource Type:: Masters Thesis
Full Text:: (reduced transition metal ion complex) CI /CI C -=C NCl/ CI- -Mn-Enz "'--o- CI- M" +1 -Enz Cr, Mn

Evaluation of emulsified asphalt for use in Saudi Arabia

Creator:: Al-abdulwahhab, Hamad I.
Abstract:: Saudi Arabia currently contains 31000 km (18600 mi) of paved roads and 42000 km (25200 mi) of agricultural roads, with the prospect of more roads to be constructed. The low population (6 million) compared to the large area of the country (2,253,300 km², 900,000 mi²) coupled with the high cost...
Resource Type:: Dissertation
Full Text:: Literature Review (Chapter 2 and Appendix A) Manufacture o Emulsion (Chapter 3) Mix Design (Chapter 4

Aerobic cometabolism of 1,1,1-trichloroethane and other chlorinated aliphatic hydrocarbons by indigenous and bioaugmented butane-utilizers in Moffett Field microcosms

Creator:: Rungkamol, Darin
Resource Type:: Masters Thesis
Full Text:: such as 1,1 - DCA and TCE are present in trace amounts (Robert et al., 1990). ' In one of the field

An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments

Creator:: Nimmala, Seshu B.
Abstract:: Fluid-structure interaction (FSI) is an interesting and challenging interdisciplinary area comprised of fields such as engineering- fluids/structures/solids, computational science, and mathematics. FSI has several practical engineering applications such as the design of coastal infrastructure (such as bridges, levees) subjected to harsh environments from natural forces such as tsunamis, storm surges,...
Resource Type:: Dissertation
Full Text:: Instructions and Visualization Capabilities……… Appendix-C: Details of the I/O Files ………………………………… Appendix

Use of Controlled Blasting to Quantify the Dynamic, In-Situ, Nonlinear Inelastic Response of Soils

Creator:: Jana, Amalesh
Abstract:: The seismic response of deep deposits of liquefiable and cyclic-softening susceptible soils has presented the geotechnical profession with significant engineering challenges. Strong ground motions may serve to soften soils under cyclic shear, trigger liquefaction, and produce damaging displacements as a consequence. This study improves the understanding of the in-situ, nonlinear,...
Resource Type:: Dissertation
Full Text:: . Reddy, P.E. of GeoResources, Inc., and Robert Miner, P.E. of RMDT, Inc. for assisting with energy

Evaluation of polymer modified asphalt in hot mix pavements

Creator:: Ifft, Charles
Abstract:: Polymer modified asphalts have recently been the focus of much attention in the U.S. due to claims that polymer additives will lengthen the life of an asphalt pavement. Much of the published research on this topic has been concentrated on the effects of polymer modifiers on binder and mixture properties....
Resource Type:: Masters Thesis
Full Text:: AC-5 Modified with 3X Styreif 103 O 102 (5 U 5 101 -40 -30-20-10 0 10 20 30 40 30 60 70 00 90

Properties of marginal aggregates treated with asphalt emulsion

Creator:: Evans, Gary L.
Abstract:: The purpose of this report is to address the problem of supplying construction aggregates to Oregon's coastal areas that are currently, or will in the near future, be deficient of good quality materials. This is done primarily by studying methods of utilizing marginal aggregates that are abundantly available in the...
Resource Type:: Masters Thesis

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